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Congestion pricing has bilevel characteristic, in which the upper level is the urban traffic administrative department and the lower level is the users. The essay applied bilevel programming model to build up congestion pricing model under the assumption that travel cost only relates to travel time. The genetic algorithm was discussed to solve the problem of the programming model in the essay. Results show that bilevel programming model can effectively solve problems of complicated congestion pricing and that the genetic algorithm can quickly converge, and can meet the needs of model precision.
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